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1、DMU Kinematics Simulator Preface Whats New? Getting Started Basic Tasks Advanced Tasks Workbench Description Glossary Index Dassault Systmes 1994-99. All rights reserved. Preface DMU Kinematics Simulator is an independent CAD product dedicated to simulating assembly motions. It addresses the design
2、review environment of digital mock-ups (DMU) and can handle a wide range of products from consumer goods to very large automotive or aerospace projects as well as plants, ships and heavy machinery. DMU Kinematics Simulator is a dedicated DMU Navigator workbench and is available on both UNIX and Wind
3、ows NT environments. This guide is organized as follows: Getting Started Provides a scenario allowing you to get acquainted with the product. Basic Tasks Provides a step-by-step guide for using DMU Kinematics Simulator. Useful tips are given for getting the most out of the product. Advanced Tasks Pr
4、ovides a step-by-step guide for using DMU Kinematics Simulator along with complementary DMU Navigator products. Workbench Description Describes menu commands and workbench toolbars that are useful for DMU Kinematics Simulator. Glossary Provides definitions of terms that are specific to DMU Kinematic
5、s Simulator. DMU Kinematics Simulator Version 5 makes use of CATIA Version 4 multi-model sessions that have been prepared with one or more kinematic mechanisms. This preparation task is described in the Basic User Tasks section of this guide. Using This Guide This guide is intended for the user who
6、needs to quickly become familiar with ENOVIA-DMU Kinematics Simulator. The user should be familiar with basic ENOVIA-DMU Navigator Version 5 concepts such as document windows, standard and view toolbars. To get the most out of this guide, we suggest you start reading and performing the step-by-step
7、tutorials “Getting Started“. The next sections present main capabilities in the form of users tasks. It may be a good idea to take a look at the section describing the menus and toolbars. Where to Find More Information Prior to reading this book, we recommend that you read the ENOVIA-DMU Navigator U
8、sers Guide. You may also like to read the following complementary ENOVIA-DMU Navigator product guides, for which the appropriate license is required: DMU Fitting Simulator Users Guide DMU Space Analysis Users Guide Whats New? Enhanced: Automatic design mode in: Managing Dressup Mechanism New Getting
9、 Started: Designing a V5 Mechanism New Task: Converting V4 Kinematic Data into DMU Kinematic Version 5 New Task: Creating a V5 Mechanism and Revolute Joints New task: Defining a Fixed Part New Task: Defining a Command New Task: Creating Joints New Task: Editing Joints Getting Started Before getting
10、into the detailed instructions for using DMU Kinematics Simulator Version 5, the following tutorials aim at giving you a feel of what you can do with the product. It provides a step-by-step scenario showing you how to use key functionalities. The main tasks described in this section are: Theme Each
11、Getting started should take about 10 minutes to complete. Designing a V5 Mechanism Before getting into the detailed instructions for using DMU Kinematics Simulator Version 5, the following tutorial aims at giving you a feel of what you can do with the product. It provides a step-by-step scenario sho
12、wing you how to use key functionalities. The main tasks described in this section are: Task These tasks should take about 15 minutes to complete. Entering the Workbench Before starting this scenario, you should be familiar with the basic commands common to all workbenches. These are described in the
13、 DMU Navigator Users Guide. Open the rods.CATProduct from the onlinesamplesdmukinematics directory. This first task will show you how to enter the DMU Kinematics Simulator workbench and select your models. 1. Select Digital Mockup - DMU Kinematics from the Start menu The DMU Kinematics workbench is
14、loaded and an empty document opens: 2. Select File - Open from the menu bar. 3. Select the the rods.CATProduct document. Click Open to open the selected file. The specification tree is displayed showing all the selected products. 4. Select the products in the tree, then select Edit - Design Mode. Yo
15、u can now expand the tree to show all the design components of the products. Use the Fit All In icon to position the model geometry on the screen. Creating a Mechanism and Revolute Joints This task will show you how to create a mechanism and revolute joints. Open the rods.CATProduct from the onlines
16、amplesdmukinematics directory. 1. Select the product in the specification tree, then select Edit - Design Mode. You can now expand the tree to show all the design components of the products. 2. Click the Revolute icon from the DMU Simulation Toolbar. The New Joint: Revolute dialog box displays: 3. C
17、lick New Mechanism. The Mechanism is identified in the specification tree. Now you need to select two lines and two planes. 4. Select Line 1 in the geometry area. In our example select a cylinder as shown below. The dialog box is automatically updated with your selection. 5. Select Line 2 in the geo
18、metry area. Select a second cylinder. The dialog box current selection field is automatically updated. 6. Select the planes as shown below. The Current selection field automatically updates. 7. Click Ok to end the Revolute Joint creation. The Revolute Joint is created as well as the coincidence cons
19、traints. The specification tree is updated. Proceed in the same manner to create joint 2, joint 3 and joint 4. This is what you obtain: You can also create a new mechanism selecting Insert- New Mechanism. from the Menu bar. The new mechanism is created and identified in the specification tree. Creat
20、ing Cylindrical Joints This task will show you how to create cylindrical joints. Open the rods.CATProduct from the onlinesamplesdmukinematics directory. You created a mechanism and 3 revolute joints as shown in the previous task. 1. Click the Cylindrical icon . The New Joint Cylindrical dialog box a
21、ppears: 2. Select Line 1 in the geometry area. In our example select a cylinder as shown opposite: The dialog box is automatically updated with your selection. 3. Select Line 2 in the geometry area. In our example select a cylinder as shown opposite: The dialog box is automatically updated with your
22、 selection. 4. Click OK to end the cylindrical joint creation. The Revolute Joint is created as well as the constraints. The specification tree is updated. You can define commands while creating cylindrical joints: Driven angle Driven length all you need to do is to check the required option. Rememb
23、er that you can at any time modify the command. For this, double-click the joint in the specification tree and edit the settings in the displayed dialog box. For more details, please refer to Editing joints. Defining a Command You can either define a command after joint creation or during joint crea
24、tion. This task will show you how to define a Command after joint creation. Open the rods.CATProduct from the onlinesamplesdmukinematics directory. 1.Double-click the joint 3 in the specification tree. The Joint Edition dialog box is displayed. 2. Activate the Driven angle option. The command will b
25、e an angle type command. 3.Click Ok to confirm your operation. The command is identified in the specification tree. Defining a Fixed Part This task will show you how to define a Fixed part. Open the rods.CATProduct from the onlinesamplesdmukinematics directory. 1. Click the Fixed Part icon from the
26、DMU Kinematics toolbar or select Insert-New Fixed Part. from the menu bar. The New Fixed Part dialog box is displayed. 2. Select the Fixed Part either in the geometry area or in the specification tree. 3. The fixed Part is automatically defined. The fixed part is identified in the specification tree
27、. At any time you can use the undo command to modify your selection. Simulating a V5 Mechanism This task will show you how to simulate the V5 mechanism you created. Open the rods.CATProduct from the onlinesamplesdmukinematics directory. You designed a V5 mechanism as described in the previous steps.
28、 1. Click the Simulation With Commands icon . The Kinematic Simulation dialog box displays: The command of the kinematics mechanism are available as shown opposite. 2. a.Manipulate the slider of the command. The kinematics mechanism moves accordingly. 2.b. Use the manipulator in the geometry area. F
29、or this: Move the mouse over a joint. The driven joint highlights and the manipulator appears. Drag the model with the left mouse button. For more information please refer to Running Simulations and About Joints. You can also enter a value for the command to achieve the same result. Note that if you
30、 click the button, the Kinematics Simulation dialog box expands. The immediate option is set by default. For more information about the On request option, please refer to Simulating on Request Using V4 Kinematic Data Task Entering The Workbench Before starting this scenario, you should be familiar w
31、ith the basic commands common to all workbenches. These are described in the DMU Navigator Users Guide. This first task will show you how to enter the DMU Kinematics Simulator workbench and select your models. 1. Select Digital Mockup - DMU Kinematics from the Start menu The DMU Kinematics workbench
32、 is loaded and an empty document opens: 2. Select Insert - Existing Component. from the menu bar. 3. Select the desired Kinematics model files by clicking the first one then shift-clicking the last one you want. Click Open to open the selected files. The specification tree is displayed showing all t
33、he selected products. 4. Select the products in the tree containing kinematics objects, then select Edit - Design Mode.You can now expand the tree to show all the design components of the products. Remember that DMU Kinematics Simulator exploits CATIA Version 4 multi-model sessions that have been pr
34、epared with one or more kinematic mechanisms. Use the Fit All In icon to position the model geometry on the screen. Browsing the Properties of the Kinematics Mechanism This task will show you how to browse the properties of the selected kinematics mechanism. Open the .model files from the onlinesamp
35、lesdmukinematics directory. 1. Select KIN_EX17_00_ACTIVE in the specification tree. 2. Right-click the kinematics mechanism in the specification tree or select the Edit-Properties. from the menu bar. 3. In the first case, select Properties from the contextual menu displayed. The Properties dialog bo
36、x is displayed: 4. Click the Mechanism Analysis icon . The General Properties of the kinematics mechanism are displayed as shown. 5. You can select another mechanism using the Mechanism name combo. 6. If you check the Show joints, this is what you obtain: 7. If you click the button, you access to a
37、graphic representation of the laws associated to each command. It is represented by a colored curve. When you pass the cursor along the curve, information about the law is displayed in the status bar. 8. The button is described in detail in Analyzing A Mechanism. For more information about laws, ple
38、ase refer to Simulating With Laws. Running a Kinematics Simulation With Commands This task will show you how to run a kinematics simulation with commands. Open the .model files from the onlinesamplesdmukinematics directory. A kinematic product is highlighted in the specification tree. 1. Click the S
39、imulation With Commands icon . The Kinematic Simulation dialog box is displayed: The commands of the kinematics mechanism are available as shown opposite. 2. Manipulate the slider of a command. For instance select the LEFT. The corresponding part of the kinematics mechanism moves accordingly. Note t
40、hat if you click the button, the Kinematic Simulation dialog box expands. The immediate option is set by default. For more information about the On request option, please refer to Simulating on Request. You can use the slider, enter a value or manipulate the geometry directly to achieve the same res
41、ult. 3. Manipulate the other commands in the same way. Running a Simulation With Laws This task will show you how to run a kinematics simulation with laws that are already defined on the mechanism. The sample document used in this task can be accessed in the folder: onlinesamplesdmukinematics. The K
42、inematics Simulation dialog box is displayed as described in the previous task. 1. Click the Simulation With Laws icon . The Kinematic Simulation dialog box appears. 2. Set the Number of steps to 10, then click the Play VCR button. The kinematic mechanism moves according to the pre-defined laws. Not
43、ice that you cannot record simulations within the Simulation With Laws functionality. If you need to record such a simulation or several simulations, please refer to Recording Positions. You can use the other VCR buttons to run the simulation again in different modes (backward, step by step, and so
44、on). Basic Tasks The table below lists the tasks you will find in this section. Theme Setting Up Your DMU Kinematics Simulator Session DMU Kinematics Simulator provides easy methods to simulate mechanisms previously defined using the CATIA Version 4 KINEMAT and KINEMUSE functions. You may find it us
45、eful to refer to your CATIA Version 4 Kinematics Users Reference Manual. Tasks Designing a V5 Mechanism DMU Kinematics Simulator provides easy methods to record and replay kinematic simulations. Tasks About Joints DMU Kinematics Simulator lets you define and edit 6 different joint types. The table b
46、elow describes the joint types and their characteristics: GRAPHIC REPRESENTATION JOINT TYPE DEGREES OF FREEDOM COMMAND TYPE DIRECT MANIPULATION Revolute1 RotationAngle YES / Left-mouse button Prismatic1 TranslationLength YES / Left-mouse button Cylindrical 1 Rotation 1 Translation Angle or Length YE
47、S / Left-mouse button Length +Angle Length: Left-mouse button Angle: Left-Mouse button + Middle-Mouse button Spherical3 Rotations_NO Planar 2 Translations 1 Rotation _NO Rigid_NO Only the joints which are assigned a command can be manipulated. Creating a Mechanism and Revolute Joints This task shows
48、 how to create a kinematics mechanism for use in DMU Kinematics Simulator Version 5. Open the rods.CATProduct from the onlinesamplesdmukinematics directory. 1. Make sure you are in Design mode. If not select the products in the tree, then select Edit - Design Mode. If the menu item cannot be selecte
49、d, right-click product1 in the specification tree 2. Click the Revolute icon from the DMU Simulation Toolbar. The New Joint: Revolute dialog box is displayed: 3. Click New Mechanism. The Mechanism is identified in the specification tree. Now you need to select two lines and two planes 4. Select Line 1 in the geometry area. In our example select a cylinder as shown opposite: The dialog box is automatically updated with your selection. 5. Select Line 2 in the geometry area. Select a second cylinder. The dialog box current selection field is automatically updated